The piano is the entire instrument. The clavier is the keyboard part.
None of Beethoven's symphonies has a piano part. He wrote five concertos for piano accompanied by orchestra, and a Fantasy for piano, chorus and orchestra.
The Rev. played the piano part in Unholy Confessions. Now that the Rev. is dead they band usually uses a recording of the piano part when they play it live. However, sometimes M. Shadows may play the part on rare occasions.
Inside the piano, there is a set of strings and mallets. When you hit a key, the mallet goes upward and hits the associated string to cause a vibration. So basically, the string is the part of the piano that vibrates to make sound.
The rhythm section of a jazz band is usually made up of drums, piano, bass, and guitar.
Piano is a noun.
Tones can be a noun or a verb. As a noun: The tones from the piano are quite beautiful. As a verb: Exercise tones up muscles.
It was Holly Hunter.
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is work
what part of speech is beneath
the part of speech sashay is a averb
Did is a verb, and not is an adverb. Didn't is not any part of speech. It's a contraction of did and not.
Adjective
The word speech is a noun.